阅读说明：本技术 物料破碎装置 (Material crushing device ) 是由 李想 曾志刚 徐浩 靳海滨 于 2019-12-24 设计创作，主要内容包括：本发明提供了一种物料破碎装置,包括：底架,底架上设置有移动轨道和移动空间,移动空间位于移动轨道下方,移动轨道和移动空间的长度方向一致；大车组件,大车组件可拆卸地安装在移动轨道上,大车组件上设置有小车轨道,小车轨道沿移动空间的宽度方向延伸；小车组件,小车组件安装在大车组件上并可沿小车轨道移动；升降装置,升降装置安装在小车组件上；破碎组件,破碎组件安装在升降装置上并在升降装置的带动下升降。采用本发明的物料破碎装置对敞车车厢进行清理,效率高、劳动强度小、人员少,通用性强,破碎组件通过上述的三维运动,可实现对所有规格的敞车车厢底部的结块物料的无死角机械疏松处理。(The invention provides a material crushing device, comprising: the device comprises a base frame, a movable track and a movable space are arranged on the base frame, the movable space is positioned below the movable track, and the length directions of the movable track and the movable space are consistent; the cart assembly is detachably arranged on the moving track, a trolley track is arranged on the cart assembly, and the trolley track extends along the width direction of the moving space; the trolley assembly is arranged on the cart assembly and can move along the trolley track; the lifting device is arranged on the trolley component; the crushing assembly is arranged on the lifting device and driven by the lifting device to lift. The material crushing device disclosed by the invention is used for cleaning the carriage of the open wagon, the efficiency is high, the labor intensity is low, the number of personnel is small, the universality is strong, and the crushing assembly can realize no-dead-angle mechanical loosening treatment on caked materials at the bottom of the carriage of the open wagon with all specifications through the three-dimensional movement.)

1. A material crushing device, comprising:

the device comprises a base frame (50), wherein a moving track (51) and a moving space (52) are arranged on the base frame (50), the moving space (52) is positioned below the moving track (51), and the length directions of the moving track (51) and the moving space (52) are consistent;

the cart assembly (10), the cart assembly (10) is detachably mounted on the moving track (51), a trolley track (13) is arranged on the cart assembly (10), and the trolley track (13) extends along the width direction of the moving space (52);

a trolley assembly (30), wherein the trolley assembly (30) is arranged on the cart assembly (10) and can move along the trolley track (13);

a lifting device (40), said lifting device (40) mounted on said trolley assembly (30);

the crushing assembly (20) is installed on the lifting device (40) and driven by the lifting device (40) to lift.

2. The material crushing device according to claim 1, wherein the base frame (50) comprises a first side frame (53) and a second side frame (54) which are arranged at intervals, the moving space (52) is formed between the first side frame (53) and the second side frame (54), the moving tracks (51) are two, and the two moving tracks (51) are respectively arranged at the top ends of the first side frame (53) and the second side frame (54).

3. A material crushing device according to claim 2, characterized in that the cart assembly (10) comprises:

the cart body (12), the trolley track (13) is arranged on the cart body (12);

the cart running gear (11) is arranged at the bottom of the cart main body (12) and erected on the moving track (51).

4. A material crushing device according to claim 3, characterised in that the cart walking means (11) comprises:

a first driving wheel (111) and a first driven wheel (112), wherein the first driving wheel (111) and the first driven wheel (112) are both installed at the bottom of the cart main body (12), and the first driving wheel (111) and the first driven wheel (112) are both erected on the moving track (51);

the first power device (113), the first power device (113) with the first action wheel (111) drive connection.

5. The material crushing device of claim 1, wherein the trolley assembly (30) comprises:

a cart main body (32);

the trolley travelling device (31), the trolley travelling device (31) is arranged on the trolley main body (32) and erected on the trolley track (13);

the lifting device comprises a lifting device frame (33), the lifting device frame (33) is fixedly connected with the trolley main body (32), and the lifting device (40) is installed on the lifting device frame (33).

6. The material crushing device according to claim 5, characterized in that the trolley walking device (31) comprises:

the trolley comprises a second driving wheel (311) and a second driven wheel, wherein the second driving wheel (311) and the second driven wheel are installed on the trolley main body (32), and the second driving wheel (311) and the second driven wheel are erected on the trolley track (13);

the second power device (312), the second power device (312) with the second action wheel (311) drive connection.

7. A material crushing device according to claim 5, characterised in that the lifting device frame (33) is provided with a lifting track in the height direction, the lifting device (40) comprising:

a lift drive (41), the lift drive (41) being mounted on the lift frame (33);

a lifting support (43), the lifting support (43) being mounted on the lifting rail by a guide wheel set (44), the crushing assembly (20) being mounted on the lifting support (43);

the first end of the lifting device (42) is connected with the guide wheel set (44), and the lifting driving device (41) is in driving connection with the second end of the lifting device (42).

8. The material crushing device of claim 7, wherein the crushing assembly (20) comprises:

the mounting flange (27), the mounting flange (27) is fixedly connected with the lifting support (43);

the mounting frame (26), the mounting frame (26) is fixedly connected to the bottom of the mounting flange (27);

a mounting seat (22), wherein the mounting seat (22) is mounted at the bottom of the mounting rack (26);

the crushing mechanism comprises a milling cutter (21) and a driving device (23), the milling cutter (21) is fixed at the bottom of the mounting seat (22), and the driving device (23) is installed on the mounting seat (22) and is in driving connection with the milling cutter (21).

9. The material crushing device of claim 8, wherein the crushing assembly (20) further comprises:

a travel guard disposed on the mounting bracket (26).

10. A material crusher as claimed in claim 9, characterised in that the stroke guard comprises a width stroke guard (24) and a length stroke guard (25).

Technical Field

The invention relates to the technical field of cleaning equipment, in particular to a material crushing device.

Background

Materials (coal, minerals and the like) are conveyed by trains of logistics parts (or raw material plants) of steel plants, thermal power plants and the like to a logistics area, the materials in a carriage of an open wagon are more after being unloaded by a tipper, especially, under the rainy or frozen condition, the materials are hardened in whole blocks or frozen, so that a large amount of unloading residual materials still exist after unloading, and a certain part of residual materials are concentrated at the bottom of the carriage.

At present, the whole hardened or frozen residual materials at the bottom of the carriage are manually cleaned, and the following problems exist in the manual cleaning of the carriage of the open wagon:

(1) in winter, the on-site cleaning personnel needs more than 40-50 persons, and a large amount of manpower resources are consumed;

(2) in winter, the cleaning of a single carriage takes 60-90 minutes, the cleaning efficiency is low, the production is influenced, and the delay penalty of carriages of the department of railways is caused;

(3) during on-site operation, the carriage is continuously pushed to move, so that more personnel move, and greater potential safety hazards exist;

(4) and the mineral powder residues contain toxic substances, and the dust is harmful to health after being contacted with the field for a long time.

Disclosure of Invention

The invention mainly aims to provide a material crushing device which can efficiently clean a whole hardened or frozen residual material at the bottom of a carriage.

In order to achieve the above object, the present invention provides a material crushing apparatus comprising: the device comprises a base frame, a movable rail and a movable space are arranged on the base frame, the movable space is positioned below the movable rail, and the length directions of the movable rail and the movable space are consistent; the cart assembly is detachably mounted on the moving track, a trolley track is arranged on the cart assembly, and the trolley track extends along the width direction of the moving space; the trolley assembly is arranged on the cart assembly and can move along the trolley track; the lifting device is arranged on the trolley component; the crushing assembly is arranged on the lifting device and driven by the lifting device to lift.

Furthermore, the underframe comprises a first side frame and a second side frame which are arranged at intervals, the moving space is formed between the first side frame and the second side frame, the number of the moving tracks is two, and the two moving tracks are respectively arranged at the top ends of the first side frame and the second side frame.

Further, the cart assembly includes: the cart track is arranged on the cart main body; the cart running gear is arranged at the bottom of the cart main body and erected on the moving track.

Further, the cart traveling device includes: the first driving wheel and the first driven wheel are both arranged at the bottom of the cart main body, and are both erected on the moving track; the first power device is in driving connection with the first driving wheel.

Further, the trolley assembly comprises: a trolley main body; the trolley travelling device is arranged on the trolley main body and erected on the trolley track; the lifting device frame is fixedly connected with the trolley main body, and the lifting device is installed on the lifting device frame.

Further, the trolley traveling device comprises: the second driving wheel and the second driven wheel are mounted on the trolley main body, and are erected on the trolley track; and the second power device is in driving connection with the second driving wheel.

Further, be provided with the lift track in the direction of height of elevating gear frame, elevating gear includes: the lifting driving device is arranged on the lifting device rack; the lifting support is installed on the lifting track through a guide wheel set, and the crushing assembly is installed on the lifting support; the first end of the lifting device is connected with the guide wheel set, and the lifting driving device is in driving connection with the second end of the lifting device.

Further, the crushing assembly comprises: the mounting flange is fixedly connected with the lifting support; the mounting frame is fixedly connected to the bottom of the mounting flange; the mounting seat is mounted at the bottom of the mounting frame; the crushing mechanism comprises a milling cutter and a driving device, the milling cutter is fixed to the bottom of the mounting seat, and the driving device is mounted on the mounting seat and in driving connection with the milling cutter.

Further, the crushing assembly further comprises: the stroke protection device is arranged on the mounting frame.

Further, the stroke guard includes a width stroke guard and a length stroke guard.

By applying the technical scheme of the invention, when the material crushing device is used for cleaning materials, for example, when a carriage of an open wagon is cleaned, the carriage of the open wagon is firstly placed in the moving space, and in the cleaning process, the cart component moves along the moving track, the trolley component moves along the trolley track, and the lifting device drives the crushing component to lift, so that the crushing component can be driven to move three-dimensionally in the moving space, and hardened and frozen residual materials on the carriage of the open wagon can be crushed in all directions.

In winter, frozen materials are fixedly connected in the compartment of the open wagon, and the material crushing device disclosed by the invention is used for efficiently milling the materials at the bottom of the compartment, so that the materials can be crushed and separated from the compartment of the open wagon; in rainy season or wet season, materials are bonded into blocks in the carriage of the open wagon, the materials are crushed by the material crushing device, and the blocks are loosened, so that the problems of low manual cleaning efficiency, high labor intensity, more personnel and the like can be solved, the robot is replaced by a robot, and the manual labor is released from heavy manual labor.

The material crushing device has strong universality, and the crushing component can realize no-dead-angle mechanical loosening treatment on caked materials at the bottom of the carriage of the open wagon with all specifications through the three-dimensional motion.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 schematically illustrates a first perspective view of the material crushing device of the invention after it has been detached from the undercarriage;

FIG. 2 schematically illustrates a second perspective view of the material reduction apparatus of the present invention after removal from the undercarriage;

fig. 3 schematically illustrates a perspective view of a crushing assembly of the material crushing apparatus of the invention;

fig. 4 is a perspective view schematically showing the material crushing device for cleaning the carriage of the open wagon.

Wherein the figures include the following reference numerals:

10. a cart assembly; 11. a cart traveling device; 111. a first drive wheel; 112. a first driven wheel; 113. a first power unit; 12. a cart main body; 13. a trolley track; 20. a crushing assembly; 21. milling cutters; 22. a mounting seat; 23. a drive device; 24. a width stroke guard; 25. a length stroke guard; 26. a mounting frame; 27. installing a flange; 30. a trolley assembly; 31. a trolley traveling device; 311. a second drive wheel; 312. a second power unit; 32. a trolley main body; 33. a lifting device frame; 40. a lifting device; 41. a lift drive; 42. a lifting device; 43. a lifting support; 44. a guide wheel set; 50. a chassis; 51. a moving track; 52. a movement space; 53. a first side frame; 54. a second side frame; 60. a gondola car carriage.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances for describing embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Referring to fig. 1 to 4, according to an embodiment of the present invention, there is provided a material crushing apparatus including an underframe 50, a cart assembly 10, a trolley assembly 30, a lifting device 40, and a crushing assembly 20.

Wherein, a moving track 51 and a moving space 52 are arranged on the chassis 50, the moving space 52 is positioned below the moving track 51, and the length directions of the moving track 51 and the moving space 52 are consistent; the cart assembly 10 is detachably mounted on the moving track 51, the cart assembly 10 is provided with the trolley track 13, and the trolley track 13 extends along the width direction of the moving space 52; the trolley assembly 30 is arranged on the cart assembly 10 and can move along the trolley track 13; the lifting device 40 is arranged on the trolley assembly 30; the crushing assembly 20 is mounted on the lifting device 40 and is lifted by the lifting device 40.

When the material crushing device in the embodiment is used for cleaning materials, for example, when the gondola car carriage 60 is cleaned, the gondola car carriage 60 is firstly placed in the moving space 52, in the cleaning process, the cart assembly 10 moves along the moving track 51, the cart assembly moves along the cart track 13, and the lifting device 40 drives the crushing assembly 20 to lift, so that the crushing assembly 20 can be driven to move three-dimensionally in the moving space 52, and hardened and frozen residual materials on the gondola car carriage 60 can be crushed in all directions.

In winter, frozen materials are fixedly connected in the open wagon carriage 60, and the material crushing device disclosed by the invention is used for efficiently milling the material at the bottom of the carriage, so that the material can be crushed and separated from the open wagon carriage 60; in rainy season or wet season, materials are bonded into blocks in the open wagon carriage 60, the materials are crushed by the material crushing device, and the blocks are loosened, so that the problems of low manual cleaning efficiency, high labor intensity, more personnel and the like can be solved, the robot is replaced by a robot, and the manual labor is released from heavy manual labor.

The material crushing device has strong universality, and the crushing assembly 20 can realize no-dead-angle mechanical loosening treatment on caked materials at the bottom of the carriage 60 of the open wagon with all specifications through the three-dimensional motion.

Referring to fig. 4, the underframe 50 in this embodiment includes a first side frame 53 and a second side frame 54 which are arranged at an interval, when actually installed, the first side frame 53 and the second side frame 54 are arranged in parallel, and the moving space 52 is formed therebetween, so as to facilitate moving the gondola car 60 into the moving space 52 or out of the moving space 52, the number of the moving rails 51 in this embodiment is two, and the two moving rails 51 are respectively arranged at the top ends of the first side frame 53 and the second side frame 54, when the gondola car 60 needs to be cleaned, only the cart assembly 10 needs to be erected on the two moving rails 51, and the cart assembly 10 needs to move along the moving rails 51, so as to drive the cart assembly 30, the lifting device 40, and the crushing assembly 20 to move along the moving rails 51, and facilitate cleaning the gondola car 60.

Referring again to fig. 1 to 4, the cart assembly 10 in the present embodiment includes a cart body 12 and a cart traveling device 11, wherein a cart rail 13 is provided on the cart body 12; the cart running gear 11 is arranged at the bottom of the cart main body 12 and is erected on the moving track 51, so as to drive the cart assembly 10 and the structure on the cart assembly 10 to move along the moving track 51.

Specifically, the cart traveling device 11 in the present embodiment includes a first driving wheel 111, a first driven wheel 112, and a first power device 113, wherein the first driving wheel 111 and the first driven wheel 112 are both installed at the bottom of the cart main body 12, and the first driving wheel 111 and the first driven wheel 112 are both erected on the moving rail 51; the first power device 113 is in driving connection with the first driving wheel 111. When the first power device 113 drives the first driving wheel 111 to move along the moving track 51, the first driven wheel 112 also moves along the moving track 51, so as to drive the cart body 12 and the structure on the cart body 12 to move along the moving track 51. In actual installation, the two cart traveling devices 11 in this embodiment are respectively installed on the two moving rails 51, and the cart main body 12 and the structure on the cart main body 12 can be stably driven to move. It can be seen that the cart running gear 11 of the cart assembly 10 of the present invention can run linearly on the moving track 51, so as to position the crushing assembly 20 in the length direction of the truck carriage 60.

Of course, in other embodiments of the present invention, the cart running gear 11 may be provided with a pulley assembly, a cylinder assembly, or other structures, and any other modifications within the spirit of the present invention are within the scope of the present invention.

Preferably, the first power unit 113 in this embodiment is a driving structure such as a motor reducer.

Referring to fig. 1 and 2, the carriage assembly 30 in the present embodiment includes a carriage main body 32, a carriage traveling device 31, and a lifting device frame 33, wherein the carriage traveling device 31 is disposed on the carriage main body 32 and erected on the carriage rail 13; the lifting device frame 33 is fixedly connected with the trolley main body 32, and the lifting device 40 is arranged on the lifting device frame 33.

When the trolley travelling device 31 moves along the trolley rail 13, it is convenient to drive the trolley main body 32, the lifting device frame 33 and the crushing assembly 20 to move along the width direction of the moving space 52.

The trolley traveling device 31 comprises a second driving wheel 311, a second driven wheel (not shown in the figure) and a second power device 312, wherein the second driving wheel 311 and the second driven wheel are both mounted on the trolley main body 32, and the second driving wheel 311 and the second driven wheel are both erected on the trolley track 13; the second power device 312 is in driving connection with the second driving wheel 311.

When the second driving wheel 311 is driven by the second power device 312 to move along the cart track 13, the second driven wheel also moves along the cart track 13, so as to drive the cart body 32 and the structure on the cart body 32 to move along the cart track 13. In actual installation, the number of the trolley traveling devices 31 in this embodiment is two, and correspondingly, the number of the trolley rails 13 is also two, and the two trolley traveling devices 31 are respectively installed on the two trolley rails 13, so that the trolley main body 32 and the structure on the trolley main body 32 can be stably driven to move.

Similarly, the cart traveling device 31 in the present embodiment may be provided with a pulley assembly, a cylinder assembly, and the like, and any other modifications within the spirit of the present invention are within the scope of the present invention.

Preferably, the second power device 312 in this embodiment is a motor reducer.

Referring to fig. 1 to 3, in order to facilitate the lifting of the crushing assembly 20, a lifting rail (not shown) is disposed in the height direction of the lifting device frame 33 in the present embodiment, and the lifting device 40 includes a lifting driving device 41, a lifting support 43 and a lifting device 42, wherein the lifting driving device 41 is mounted on the lifting device frame 33; the lifting support 43 is arranged on the lifting track through the guide wheel set 44, and the crushing assembly 20 is arranged on the lifting support 43; the first end of the lifting device 42 is connected with the guide wheel set 44, and the lifting driving device 41 is in driving connection with the second end of the lifting device 42.

Preferably, the lifting driving device 41 in this embodiment adopts a motor reducer structure, and the lifting device 42 adopts a chain lifting mechanism, when the motor reducer rotates, the chain can be driven to rotate, and then the guide wheel set 44 is driven to move along the lifting track, so as to drive the lifting support 43 to lift, and then the crushing assembly 20 mounted on the lifting support 43 is driven to lift.

Of course, in other embodiments of the present invention, the lifting device 42 may be replaced by a linear motion mechanism such as rack and pinion, hydraulic cylinder lifting, etc., and any other modifications within the spirit of the present invention are within the scope of the present invention.

Correspondingly, the power sources of the cart traveling device 11, the cart traveling device 31, the lifting driving device 41 and the driving device 23 in the present invention may adopt hydraulic motors. The cart walking device 11 and the trolley walking device 31 can also adopt a gear rack to realize the linear walking function.

Referring again to fig. 1-4, the crushing assembly 20 in the present embodiment includes a mounting flange 27, a mounting frame 26, a mounting seat 22, and a crushing mechanism, wherein the mounting flange 27 is fixedly connected to a lifting support 43; the mounting frame 26 is fixedly connected to the bottom of the mounting flange 27; the mounting seat 22 is mounted at the bottom of the mounting frame 26; the crushing mechanism comprises a milling cutter 21 and a driving device 23, the milling cutter 21 is fixed at the bottom of the mounting seat 22, and the driving device 23 is mounted on the mounting seat 22 and is in driving connection with the milling cutter 21.

When the device is used, the milling cutter 21 is driven to rotate by the driving device 23, hardened or frozen anticipates on the compartment 60 of the gondola car can be cleaned simply and quickly.

In order to avoid the collision of the crushing mechanism on the side wall of the gondola car carriage 60, the crushing assembly 20 in this embodiment further comprises a stroke protection device, which is disposed on the mounting bracket 26 and can prevent the crushing assembly from colliding with the side wall of the gondola car carriage 60, and prevent the crushing assembly 20 from damaging the side wall of the gondola car carriage 60 and causing damage to the material crushing device.

Preferably, the stroke guard in this embodiment includes a length stroke guard 25 and a width stroke guard 24, and in the actual design process, the length stroke guard 25 and the width stroke guard 24 may be configured as a limit pillar, or may be configured as a distance sensor or a proximity switch. When the milling cutter 21 is about to touch the side wall of the carriage 60 of the gondola car, the control system controls the material crushing device to stop running, and the operation is safe and reliable.

According to the above embodiment, the cart traveling device 11 of the cart assembly 10 of the present invention can travel linearly on the moving rail 51, so as to position the crushing assembly 20 in the longitudinal direction of the truck bed 60. The trolley travelling device 31 of the trolley assembly 30 can travel on the trolley track 13 in a straight line, so that the crushing assembly 20 can be positioned in the width direction of the open wagon carriage 60. The lifting device 40 can be lifted and lowered along the lifting track of the lifting device frame 33 in the height direction, so that the crushing assembly 20 can be positioned in the height direction of the gondola car 60.

The invention can also be additionally provided with optional functions to realize the integral rotary motion of the crushing assembly 20, and can further improve the rotary milling efficiency of materials at the bottom of the carriage 60 of the open wagon. The specific embodiment is as follows: a swivel mechanism is added to the lifting pedestal 43 and the milling cutter 21 is then connected to the swivel mechanism to effect the overall rotational movement of the crushing assembly 20.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

when the open wagon compartment has residual materials, particularly under rainy or frozen conditions, the materials are frozen and caked in whole blocks or adhered into blocks, and the like, the materials can be mechanically processed by the rotary milling motion of the milling cutter. In winter, the rotary milling of the milling cutter can crush frozen and caked materials and separate the materials from the bottom of the carriage. In rainy season, the wet and hardened materials can be loosened by rotary milling of the milling cutter.

The crushing assembly of the invention obtains the linear motion along the length direction of the carriage of the open wagon through the linear motion of the cart assembly, obtains the linear motion along the width direction of the carriage through the linear motion of the trolley assembly, and obtains the linear motion along the height direction of the carriage through the linear motion of the lifting device. The crushing assembly moves linearly through the three shafts and then mills the materials at the bottom of the open wagon through the rapid rotation of the milling cutter, so that no dead angle of the materials at the bottom of the open wagon is realized.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.